1995–2008: Beginnings and stage roles
Michele made her Broadway debut in 1995, at the age of eight, as a replacement in the role of Young Cosette in Les Misérables. Michele was also the understudy for the role of Gavroche. This was followed by the role of the Little Girl in the 1998 original Broadway cast of Ragtime. Michele had been portraying the part of the Little Girl for a year in the original Toronto cast, before the production was transferred to Broadway. As a child, she voiced a main character, Christina, in the animated film Buster & Chauncey's Silent Night, released on October 13, 1998. In 2004, Michele began portraying Shprintze in the Broadway revival of the musical Fiddler on the Roof, and understudied the role of Chava. She also performed on the cast recording of the show.
Michele next played the role of Wendla Bergmann in Steven Sater and Duncan Sheik's musical version of Spring Awakening, starring in early workshops and Off-Broadway performances, before finally originating the role in the 2006 Broadway production at the age of twenty. In February 2005, she performed as Wendla at the Lincoln Center for the Performing Arts. Around the same time that Spring Awakening was set to go to Broadway, Michele was offered the role of Éponine Thénardier in the Broadway revival of Les Misérables. She elected to remain with Spring Awakening, which premiered on Broadway in December 2006. For her performance, she was nominated for the Drama Desk Award for Outstanding Actress in a Musical. In January 2008, Michele starred in a concert production of the musical Alive in the World as Phoebe, aiding the Twin Towers Orphan Fund.
In April 2008, she performed a Flops n' Cutz concert at Joe's Pub with her boyfriend at the time,stage actor Landon Beard. In May 2008, Michele left the Broadway cast of Spring Awakening with her co-star Jonathan Groff. She then performed as Claudia Octavia in a reading of Sheik and Sater's new musical, Nero, in July 2008 at Vassar College. In August 2008, she portrayed Éponine in the Hollywood Bowl's Les Misérables concert, which was directed by Richard Jay-Alexander. She starred alongside Brian Stokes Mitchell as Javert and John Lloyd Young as Marius Pontmercy, both of whom would go on to guest star on Glee. While in Los Angeles for the Les Misérables concerts, she sang at the Upright Cabaret at Mark's Restaurant in Hollywood in August 2008. The next month, she performed at the benefit Broadway Chance Style: Up Close & Personal along with stars such as Laura Bell Bundy, Eden Espinosa and Kristoffer Cusick.
2009–2012: Glee and mainstream success
From 2009 until its ending in 2015, Michele starred on the Fox musical comedy-drama series Glee as Rachel Berry, the show's female lead and star singer. The role was written specifically for Michele by co-creator Ryan Murphy. Maureen Ryan of the Chicago Tribune wrote that Michele "not only has an amazing voice but manages to make her character, spoiled diva Rachel Berry, more than a humorless stereotype." Denise Martin of the Los Angeles Times commented, "If there's any justice in the world, Lea Michele will win a Golden Globe and an Emmy for playing Rachel."
Michele has won a number of awards for her portrayal of Rachel. At the 2009 Satellite Awards, she won Best Performance by an Actress in a Musical or Comedy Television Series. That same year, she was nominated for the Teen Choice Award for Choice TV Breakout Star, the Golden Globe Award for Best Actress – Television Series Musical or Comedy, and the Primetime Emmy Award for Outstanding Lead Actress in a Comedy Series. In 2010, she received another Teen Choice Award nomination for Choice TV Actress: Comedy, and won the NewNowNext Award for Brink of Fame: Actor. Michele was included on Time's 2010 list of the 100 Most Influential People In the World. In December 2010, Michele received Billboard's first-ever Triple Threat Award. Several songs performed by Michele as Rachel have been released as singles, available for digital download. Her cover of The All-American Rejects' "Gives You Hell" reached the top 40 on the Billboard Hot 100. Michele is featured as lead singer in 14 of the top 20 selling Glee cast songs as of 2010. Michele was nominated for two Grammy Awards in 2011: Best Pop Performance by a Duo or Group with Vocals ("Don't Stop Believin'") and Best Compilation Soundtrack Album for a Motion Picture, Television, or Other Visual Media (Glee: The Music, Volume 1). She was nominated again for Best Actress – Television Series Musical or Comedy at the 2011 Golden Globe Awards, and in 2012, won the People's Choice Award for Favorite TV Comedy Actress.